The invention relates to an ointment for treating and curing skin diseases of human beings such as psoriasis, dermatitis, acne, herpes and fungi, consisting of a composition obtained based on ingredients such as white petrolatum, clobetasol propionate, distilled water, rosemary honey, virgin olive oil, white precipitate mercury chloride, salicylic acid, and gentian violet. It also describes a process for preparing said ointment basically consisting of preparing a completely homogenized composition from the mentioned ingredients with the use of a stirring device for a time of about 30 minutes and maintaining the temperature at around 20.degree. C. in order to obtain the cream or ointment appearance of said composition.